Ratio Mips Helmet 2021 S17 The inner back is quilted

The inner back is quilted with warmer panels

With a 9-in-1 design

The 2-layer GORE-TEX fabric is the most reliable fabric on the market

With maximum compressibility

Ratio Mips Helmet 2021 S17 The inner back is quiltedThe Giro Ratio Mips helmet has the perfect ratio of everything you need to accompany you on the mountain, from its thermostat control adjustable venting to its mips technology to its laid back style. The ratio is a no nonsense helmet that boasts the features found on premium helmets at a more accessible price. Beneath the sleek silhouette, you'll find the adjustability of an in form fit system, thermostat control adjustable venting and compatibility